11.4 - Isomerism (definitions)

Question 1

What is structural isomerism?

Answer 1

Structural isomers are compounds with the same molecular formula but different structural formula.

Question 2

Structural isomers - functional group

Answer 2

In compounds containing a functional group, the functional group can be at different positions along the carbon chain.

Question 3

Structural isomers - different functional groups

Answer 3

Sometimes two molecules containing different functional groups have the same molecular formula e.g. aldehydes and ketones.